3A water heating/boiler with built-in temperature sensing probe. Storage memory:Don't worry about losing setting data due to power outages.Child lock: Keyboard lock effectively and safely prevents children from misoperating Product Usage: 3A is suitable for water-based textile gas boilers/wall mounted boilers/water pumps. Perfect for various places such as homes, offices, shopping malls, hotels, nursing homes, etc. Load current: 3A for water heating (resistive) 3A with linkage function: Control the 3A temperature controller with powerful functions, which can be used for water heating/gas boilers/wall mounted boilers, without the need to stock multiple models Power supply voltage: 90V-240V AC Maximum power: 4500W Colour:black Material:plastic+metal Package Contents: 1 x Tuya WiFi Thermostat Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.